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标题: 曼哈顿的一题！！ [打印本页]

作者: zoe爱猕猴桃 时间: 2017-10-10 19:00
标题: 曼哈顿的一题！！

A powder derived from the North American Echinacea flower, which has been effective in preventing colds, is grown by many small farmers out West.

A

A powder derived from the North American Echinacea flower, which has been effective in preventing colds,
B

A derivative, which has been effective in preventing colds, of North American Echinea flower,
C

North American Echinacea flower derivative, which has been effective in preventing colds
D

The North American Echinacea flower has a derivative which has been effective in preventing colds, that
E

The North American Echinacea flower, a derivative of which has been effective in preventing colds,

求助！！答案选E，想问中间的of which怎么解释呀，of做derivative的介词，which指代花花么？？这也太跳跃了把。

作者: AlanLyu 时间: 2018-6-15 11:57
这题要看划线部分后面的"is grown by many small farmers out West"，前面的主语必然是能被种植的，ABC的主语都是derivitive或powder，很显然不能被种植，排除；
选项Dthat is grown...变成了定语从句，修饰不明，句子有歧义。
综上，选E。

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